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Segment Information - Operating Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020
Segment Reporting Information [Line Items] |  |
Total sales | $ 49,208 | $ 61,793
Sales: |  |
Income (loss) from operations | (1,362) | (1,424)
Total assets | 62,974 | 53,645
Capital expenditures | 98 | 230
Depreciation and amortization | 388 | 452
High Performance Products Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 4,623 | 5,876
Sales: |  |
Income (loss) from operations | (4,578) | (3,730)
Total assets | 9,018 | 9,915
Capital expenditures | 18 | 89
Depreciation and amortization | 177 | 218
TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 44,585 | 55,917
Sales: |  |
Income (loss) from operations | 3,216 | 2,306
Total assets | 53,956 | 43,730
Capital expenditures | 80 | 141
Depreciation and amortization | 211 | 234
Product |  |
Segment Reporting Information [Line Items] |  |
Total sales | 35,226 | 47,989
Product | High Performance Products Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 3,126 | 3,401
Product | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 32,100 | 44,588
Services |  |
Segment Reporting Information [Line Items] |  |
Total sales | 13,982 | 13,804
Services | High Performance Products Segment |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,497 | 2,475
Services | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 12,485 | 11,329
U.K. | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 2,004 | 1,383
Sales: |  |
Income (loss) from operations | (217) | (168)
Total assets | 10,174 | 10,296
Depreciation and amortization |  | 3
U.K. | Product | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,578 | 943
U.K. | Services | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 426 | 440
U.S. | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 42,581 | 54,534
Sales: |  |
Income (loss) from operations | 3,433 | 2,474
Total assets | 43,782 | 33,434
Capital expenditures | 80 | 141
Depreciation and amortization | 211 | 231
U.S. | Product | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | 30,522 | 43,645
U.S. | Services | TS |  |
Segment Reporting Information [Line Items] |  |
Total sales | $ 12,059 | $ 10,889

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